Does this person give reasons to trust the institution? If his argument is that everyone should assume there is no institutional bias anywhere in science then that is shockingly naive. I haven't read the book though.
Can you give an example of something that is accepted as mainstream science because of "institutional bias"?
I appreciate individual scientists have biases that will certainly influence their research, but that is not mainstream science. Every time a scientist publishes, he put his reputation on the line. If the paper turns out to be fundamentally flawed, that can ruin his career. Scientist will tend, therefore, to only make claims they can support, and will be careful to qualify them appropriately. That is probably less true in companies, but that is why a scientist should declare their personal interests when publishing a paper.
It is not perfect, but it is probably the best we have,
I would suggest the reason people do not trust scientists is that scientists tell them truths they do not want to hear - whether that is climate change, or vaccination or evolution. Plus, there are a lot of people out their who have a vested interest in trashing science to advance their own interests. The likes of Ken Ham and Stephen Meyer makes a lot of money from trash-talking evolution.